arthritis. Inflammation of a joint.
arthrotomy. Cutting into a joint.
articulation. A joint.
aseptic. Free from septic matter.
asepticize. To render aseptic or sterile.
aspiration. The withdrawal by air or by suction of fluid from any body cavity.
astringent. An agent producing contraction of organic tissues or the arrest of a discharge.
atrophy. The wasting or diminution of the size of a part from lack of nutrition.
autoclave. Instrument for sterilizing by steam.
axis. A straight line passing thro a spherical body between its two poles and about which the body may revolve.